Decided to stop at HF and grab a plug socket as I still hadn't gotten a look at my plugs since buying the truck. Pulled one and it looked decent and was an NGK BUT it was a single strap plug and I know the 5vz is supposed to have dual strap plugs. Damn PO cheaping out on me as usual. Ran up to advance and grabbed the proper plugs and the them in. Also gave me an opportunity to look at the throttle body and I guess I know one of my next jobs.
Might clean the IAC too while I'm in there.
Also noticed this line that comes off the driver valve cover and goes into the intake was putting some oil into the intake (not sure what is called, it's not the PCV).
Also had a vacuum line that is cracking on me that I pulled off intake so I might just replace all the vacuum lines soon.
Anyway, it might be classic engine placebo but she seems to be running a little smoother with the proper plugs in there now. And I was also happy that I didn't see any bad signs on the plugs I pulled out. Might also do a compression test soon too to see where I'm at. I suspect it will actually look pretty good given the general performance of her. I suspect either she was extremely well cared for in general or she had head work at some point in life.